Sea&Sea RDX Port Base S @inonsdmount so an off-the-shelf flashtube and

so an off-the-shelf flashtube and reflector won't do

It varies among different action cameras

Nauticam housing viewfinder

Underwater coverage is super wide 100 degree thanks to the optically designed dome lens which effectively widen LED beam without sacrificing native brightness from LED modules

Sea&Sea RDX Port Base S @inonsdmount so an off-the-shelf flashtube andIt's used to install in RDX series housings and transfom into Sea&Sea Compact Macro Port series and Compact Wide Port L #30103. Specifications Dimensions (DIAxD): 102 x 15mm 4. 1 x 0. 6inch Weight: Approx. 90g 3. 2oz Depth rating: 100m 330ft Construction: Corrosion resistant aluminum alloy (anodized) Extension length: 11. 2mm 0. 4 inches